/Engine/Source/Runtime/NavigationSystem/Public/NavigationSystem.h
Fills a mask indicating which navigation data associated to the supported agent mask are already instantiated.
Number of instantiated navigation data.
uint8 FillInstantiatedDataMask ( [TBitArray](API\Runtime\Core\Containers\TBitArray)<> & OutInstantiatedMask, [ULevel](API\Runtime\Engine\Engine\ULevel) * InLevel )